Mold for artificial teeth.



Patented July 29, I902. T. STEELE. MOLD FOR ARTIFICIAL TEETH.

(Application filed Dec. 5, 1901.)

(No Model.)

WT. "Mm" 6 Z S y W M M E W. M J. IY H F M 0 m UNITED STATES PATE T OFFICE.

THOMAS STEELE, OF REDBANK, NEW JERSEY.

MOLD FOR ARTIFICIAL T EETH.

SPECIFICATIONforming part of Letters Patent No. 705,972, dated July 29, 1902.

Application filed December 5, 1901. Serial No. 84,737. (No model.)

To all whom it may concern:

Be it known that I, THOMAS STEELE, a citizen of the United States, and a resident of Redbank, in the county of Monmouth and State of New Jersey, have invented a new and Improved Mold for Artificial Teeth, of which the following is a full, clear, and exact description.

The invention relates to molds for forming sets of artificial teeth of porcelain or other material and each having a central cored recess for an attaching device.

The object of the invention is toprovide a new and improved mold for forming artificial teeth arranged to permit individual adjustment of the core-pins, to permit of accurately setting the core-pins relative to the toothforms to insure proper formation of the teeth,

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the improvement, the upper mold-section being removed. Fig. 2 is a transverse section of the improvement on the line 2 2 of Fig. 1 and showing the upper mold-section in position. Fig. 3 is aside elevation of the core-bar carrying-the adj ustable core-pins, and Fig. 4 is an enlarged perspective view of the adjustable head and core-pin.

The mold-sectionsA and A are of the usual construction and held one on the other by guide-pins B, and in the opposite faces of the said mold-sections are arranged registering mold-forms O for forming sets of teeth in the usual manner. Into each pair of registering mold-forms extends a core-pin D, rigidly held on and projecting from a head E, having a shank E extending into a recess F, formed on the inside of a core-bar F, the said shank E having an elongated slot E for the passage of a screw G, screwing into the core-bar F to secure the shank, the head, and the pin D in position on the core-bar. The head of the screw G extends in an elongated countersink E formed in the shank E, as plainly indicated in Fig. 3, so that when the screw is loosened the shank E, and with it the head E and pin D, can be adjusted so as to bring the pin D in proper position in the corresponding mold-form C, and when the desired position has been reached the screw is screwed up, so as to securely hold the shank, the head, and the pin in a proper position.. As illustrated in Fig. 1, two core-bars F extend in a recess A in the mold-section A, and the said core-bars are secured in position by a suitable wedge H, the same as heretofore practiced in the ordinary molds for forming artificial teeth.

By the arrangement described the head E of each core-pin extends on the top of the corresponding core-bar F and is shaped to close the end of the corresponding mold-form, but the said head and its pin are adjustable on the core-bar, so as to bring the core-pin and head at all times in proper position relative to the moldforms. It is understood that in the molds as heretofore constructed and having the core-pins rigidly secured on the core-bars it frequently happens that the pins are bent out of proper shape through handling, and consequently extend inaccurately in the mold-forms, so that badly-formed teeth are the final result. By the arrangement described each individual core-bar can be independently adjusted relatively to the other ones, so as to properly extend into its corresponding mold-form. Furthermore, in case a pin breaks or becomes damaged it is not necessary to throw the whole mold-bar away, as it is only necessary to remove this pin and its head from the mold-bar and put another one in place, so that the mold is again made ready for use.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A mold for artificial teeth, having a corebar, heads held adjustably thereon, and corepins projecting rigidly from the said heads, as set forth.

2. A mold for artificial teeth, having a corebar, heads held adj ustably thereon, core-pins on the said heads, and means for adjustably securing the heads to the core-bar, the heads IO screw passing thronghthe slot and screwing into the core-bar, the head of the screw extending in the said countersink, as set forth. In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

THOMAS STEELE.

Witnesses: H. H. CURTIS,

D, H. APPLEGATE. 

